In a classic study of procrastination by Lay (1986), in an introductory psychology class,…
In a classic study of procrastination by Lay (1986), in an introductory psychology class, students received a survey that measured procrastination. Participants were instructed to complete the survey and return it to the researcher by mail. High-procrastinating participants were identified by their degree of agreement with survey items like, “I often find myself performing tasks that I had intended to do days before.” Interestingly, the researcher also measured the amount of time that it took for participants to return the survey. The following represents the number of days that some of the high procrastinators waited to return the survey:
a. Use a one-tailed test with a = .05 to test the hypothesis that high procrastinators waited more than one day to return the survey.
b. Compute the 95% confidence interval for the mean amount of time required to return the survey.
c. Write a sentence showing the outcome of the hypothesis test and the confidence interval as it would appear in a research report.